I recently picked up these armwarmers to use during trail runs on our local mountain. The elevation change from the top plateau down to the side trails creates a noticeable temperature (and wind exposure) difference. This has made it hard in the past to dress in such a way that I was not too cold and not too hot during my runs.

These armwarmers give me a thermostat that I can adjust during my cold-weather runs, and they've been working great. They're also soft material that does well wiping my forehead, nose, etc. without scraping skin.

Since they push down to my wrist (instead of bunching up at my elbow like a shirt), they don't collect much sweat when I'm in warm-mode. That's awesome since it means they're not freezing cold when I pull them back up for cold-mode.

These armwarmers are so comfortable and so light, yet really do the job. I purchased these for a fall marathon and was concerned that I would need to remove them during the race. They kept me warm early in the race but never got too hot. I ended up keeping them on the whole time. They stay in place and look really good! I would recommend these for sure.

I purchased these for a fall marathon. They are lightweight, but keep you warm for the first portion of a cool morning. They are also lightweight enough to be pushed down around your wrists after you warm up, without causing chafing or discomfort. The little bit of anti-slip latex at the top helps them stay comfortably up around your arms.

I bought these sleeves to use instead of a long sleeve shirt when it's a bit cool at the start of a run. I warm up pretty quickly, so having the ability to take them off when I'm warm was a priority.

They're easy to take off while running once I'm warmed up and lightweight enough to be unnoticeable when I tie them to my running belt but heavy enough to keep my arms warm. This product just pretty much perfect!

These are lighter than the other arm warmers that Brooks offer. The material is silky smooth (similar to equilibrium shirts) and provides warmth for a run that starts cool and ends warmer. I you like to run 'cool' and the start of your run requires a long sleeve but knowing by the end it will be singlet temperatures this is a good product for you. Very light weight and easy to carry when not using.